Keywords: Safety, Safety
Motivation: The effects of flexible receive-only coils on Specific Absorption Rate (SAR) are understudied and poorly understood.
Goal(s): The goal was to examine, in the pediatric case, SAR effects in the presence of a receive coil with various blocking impedance characteristics.
Approach: Finite Difference Time Domain analysis was applied to evaluate SAR for pediatric human models wrapped in a flexible 16-channel coil with three blocking impedance configurations.
Results: Results demonstrated that local and whole-body SAR decreased upon inclusion of a wrapped surface coil when blocking impedance was resistive or inductive and increased when capacitive.
Impact: The demonstration of SAR effects in the presence of flexible receive-only coils and the indication of SAR configurability via blocking impedance control informs coil design to lower SAR and facilitate safety in high thermal-risk applications such as pediatric imaging.
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